# A175487 (b-file synthesized from sequence entry) 1 2 2 7 3 37 4 127 5 397 6 3613 7 18089 8 162881 9 1791787 10 41211197 11 370900973 12 4821712733 13 43395414737 14 477349562419 15 4296146062051 16 227695741289567 17 9335525392876531 18 326743388750679161 19 16663912826284638251 20 583236948919962339073 21 9915028131639359764313